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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In one dimensional flow, the flow

Is steady and uniform
Takes place in straight line
Takes place in one direction
Takes place in curve

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)
2V/(vr + v)
V/(vr + v)
V/(vr - v)

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

steady flow
non-uniform flow
laminar flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

68.8%
49.2%
39.2%
84.8%

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

Causes noise and vibration of various parts
Causes sudden drop in power output and efficiency
Reduces the discharge of a turbine
All of these

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Hydraulics and Fluid Mechanics in ME
An object having 10 kg mass weighs 9.81 kg on a spring balance. The value of 'g' at this place is

10 m/sec²
9.81 m/sec²
9.75 m/sec²
9 m/sec

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